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In methyl thiocyanate, N≡C and C−S distances are 116 and 176 pm. By contrast, N=C and C=S distances are 117 and 158 pm in isothiocyanates. [7] Typical bond angles for C−S−C are 100°. [3] By contrast C−N=C in aryl isothiocyanates is 165°. Again, the thiocyanate isomers are quite different with C−S−C angle near 100°.
Thiocyanate complexes are not widely used commercially. Possibly the oldest application of thiocyanate complexes was the use of thiocyanate as a test for ferric ions in aqueous solution. [15] The reverse was also used: testing for the presence of thiocyanate by the addition of ferric salts. The 1:1 complex of thiocyanate and iron is deeply red.
Thiocyanate shares its negative charge approximately equally between sulfur and nitrogen. As a consequence, thiocyanate can act as a nucleophile at either sulfur or nitrogen—it is an ambidentate ligand. [SCN] − can also bridge two (M−SCN−M) or even three metals (>SCN−
Definitions must be clearly expressed and carefully controlled, especially if the sources of data are different and arise from different fields (e.g., picking and directly mixing data from classical electrochemistry textbooks (versus SHE, pH = 0) and microbiology textbooks (′ at pH = 7) without paying attention to the conventions on which ...
The interchange of bridging and terminal ligands is called bridge-terminal exchange. The process is invoked to explain the fluxional properties of metal carbonyl and metal isocyanide complexes. [6] Some complexes that exhibit this process are cobalt carbonyl and cyclopentadienyliron dicarbonyl dimer: Co 2 (μ-CO) 2 (CO) 6 ⇌ Co 2 (μ-CO) 2 (CO ...
It is formed when an oxygen is singly bonded to the thiocyanate group. Hypothiocyanous acid is a fairly weak acid; its acid dissociation constant (pK a) is 5.3. Hypothiocyanite is formed by peroxidase [1] catalysis of hydrogen peroxide and thiocyanate: H 2 O 2 + SCN − → OSCN − + H 2 O
The Rosenkranz double and Rosenkranz redouble are elements of a bridge bidding convention invented by Dr. George Rosenkranz, collectively known as the Rosenkranz double. [1] It is a double made by the advancer (partner of the overcaller) in an auction where opener, overcaller and responder have all bid different suits. It is used to describe ...
Copper(I) thiocyanate is a hole conductor, a semiconductor with a wide band gap (3.6 eV, therefore transparent to visible and near infrared light). [11] It is used in photovoltaics in some third-generation cells as a hole transfer layer.